Home / 398,263.12-549,233.94-290,662.72

Finding the Fourth Proportional to 398,263.12, 549,233.94 and 290,662.72

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Solution

The fourth proportional to 398,263.12, 549,233.94 and 290,662.72 is: 400,845.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,263.12 : 549,233.94 = 290,662.72 : x
  2. Step 2: Convert to fraction form
    398,263.12/549,233.94 = 290,662.72/x
  3. Step 3: Cross multiply
    398,263.12x = 549,233.94 × 290,662.72
  4. Step 4: Simplify right side
    398,263.12x = 159,641,830,916.72
  5. Step 5: Solve for x
    x = 159,641,830,916.72/398,263.12
  6. Step 6: Final answer
    x = 400,845.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.